Whether youre training, competing, or recovering, your performance depends on staying in your comfort zone as long as possible. Like the AT Hybrid Vest, the new Gradient Vest has full-length, windproof panels to keep your core warm and stretch side panels for range of motion and comfort. 37.5 insulation is chemical-free and has an extreme weight-to-warmth ratio. Performance clothing powered by 37.5 Technology removes moisture before it turns into sweat, helping you maintain an ideal core temperature so that you can perform your best. Climate control clothing with 37.5 Technology has been proven to decrease the rate of core temperature buildup, increasing athletic performance by up to 26%. Keep your game sharp with this reliable, comfortable, and stylish gear made for modern golfers who want performance with personality.